TIDT400 July   2024

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Suggested Equipment
    3. 1.3 General Texas Instruments High Voltage Evaluation (TI HV EMV) User Safety Guidelines
  6. 2Testing and Results
    1. 2.1 Load Regulation
    2. 2.2 Efficiency Graphs
    3. 2.3 Power Factor (PF) and Input Current Total Harmonic Distortion (iTHD)
    4. 2.4 Efficiency, PF, and THD Data
    5. 2.5 Thermal Images
    6. 2.6 Bode Plots
  7. 3Waveforms
    1. 3.1 Switching
    2. 3.2 Output Voltage Ripple
    3. 3.3 Output Current Ripple
    4. 3.4 Load Transients
    5. 3.5 Start-Up Sequence

2.5 Thermal Images

Thermal images are shown in Figure 2-6.

PMP23464 TA = 25.0°C, 115V, 60Hz Input, Full Load Figure 2-6 TA = 25.0°C, 115V, 60Hz Input, Full Load
Note: Tested after 20 minutes operation, with 12V, 0.25A fan cooling.
Table 2-2 Component Temperature, 115V, 60Hz Input, Full Load
COMPONENT TEMPERATURE (°C)
D1 Rectifier Bridge 56.2
Q1 PFC MOSFET 45.7
D5 PFC Diode 45.3
L4 PFC Choke 52.0
Q7, Q8 LLC MOSFETs 56.7
L5 LLC Resonant Inductor 71.5
T1 LLC Transformer 75.2
D11, D12 LLC Rectifier Diodes 59.1
PMP23464 TA = 25.0°C, 230V, 50Hz Input, Full Load Figure 2-7 TA = 25.0°C, 230V, 50Hz Input, Full Load
Table 2-3 Component Temperature, 230V, 50Hz Input, Full Load
COMPONENT TEMPERATURE (°C)
D1 Rectifier Bridge 41.4
Q1 PFC MOSFET 37.3
D5 PFC Diode 39.0
L4 PFC Choke 34.9
Q7, Q8 LLC MOSFETs 56.7
L5 LLC Inductor 70.4
T1 LLC Transformer 72.0
D11, D12 LLC Rectifier Diodes 58.4